Molecular orbital model of optical centers in bismuth-doped glasses.
Molecular orbital model of optical centers in bismuth-doped glasses.
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DOI：
10.1364/ol.34.001549
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发表时间：
2009-05
期刊：
影响因子：
3.6
通讯作者：
E. .. Kustov;L. I. Bulatov;V. Dvoyrin;V. Mashinsky
中科院分区：
文献类型：
--
作者：
E. .. Kustov;L. I. Bulatov;V. Dvoyrin;V. Mashinsky
基于分子轨道理论和薛定谔方程的解，解释了掺铋硅酸盐玻璃芯光纤的光谱特性。薛定谔方程考虑了铋的s、p和d电子层与氧原子的s（sigma）、p（sigma）和p（pi）轨道的交换、自旋轨道和玻璃场势相互作用。该方法可以解释与铋原子具有相同电子层结构的其他原子形成的其他光学中心的红外发光性质。提出了基于分子轨道与金属态之间的分子内电荷转移的跃迁模型。
Spectroscopic properties of optical fibers with a bismuth-doped silicate glass core are explained on the basis of molecular orbital theory and a solution of the Schrödinger equation, which takes into account the exchange, the spin-orbital, and the glass field potential interactions of s, p, and d electron shells of bismuth with s(sigma), p(sigma), and p(pi) orbits of oxygen atoms. The approach can explain the IR luminescence properties of other optical centers formed by other atoms with the same structure of electron shells as the bismuth atom. The model of transitions based on intramolecular charge transfer between molecular orbital and metallic states is proposed.